Manual Number: 41209-004-1
Page 1-8
586MBH Manual
Step 2 - DRAM, CPU and Cables Installation
Depending upon how your 586MBH Industrial is configured you may need to install the following:
•
DRAM (SIMMs)
•
CPU
586MBH Industrial Memory Configuration
The 586MBH Industrial uses standard Fast Page Node or EDO 60ns access speed SIMMs. It is
very important that the quality of the SIMMs is good. Undesirable operation of the system may
result if poor quality SIMMs are used. Always purchase your memory from a reliable source.
The 586MBH uses standard 32 or 36-Bit SIMMs. They are slight larger than other 9-Bit SIMMs
that are also commonly used on systems boards. They are configured into four, 8-Bit (or 1 Byte)
sections. Thus, a total of 32 Bits ( no parity) or 36 Bits (with parity) are stored. This is often
confusing because these SIMMs are commonly referred to as 256K by 32 or 36 or 1MB by 32 or
36. To determine the actual capacity of the SIMM, simply multiply the 256K, 512K or 1MB by 4.
Thus the actual SIMMS capacity is 1MB, 2MB and 4MB respectively.
Installing Memory Modules
The 586MBH Industrial has 4 memory module sockets. The order in which they should be popu-
lated is from the inside of the board outward. Note that each socket is labeled: SM1, SM2, SM3,
SM4. Refer to figure 1.3.
At least TWO memory modules MUST be installed at a time.
When inserting the memory modules, note the notch on the edge of each module. This notch is
designed to permit insertion in only one way. this notch must be pointed towards the keyboard
connector.
Start with the innermost socket (SM1). Gently place the module into the desired socket at a 30-
45° angle. Then gently rotate or rock the module into an upright position. Never force a memory
module into its socket. Rather, double check the notch and gently rock it into place. When the
module has been properly installed, the metal latches on either side of the memory module will
“click” into place. (See figure 1-2). Repeat the mentioned steps until all memory modules are
installed. No jumpers are involved in DRAM configuration.